Glass-blowing machine.



N. W. HARTMAN IGLASS BLOWING MACHINE. APPLICATION HLED1L1LY12.|909.

1,155,809.A Patented Oct. 5,1915.

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N. W. HARTMAN.

GLASS BLOWING MACHINE.

APPLICATION FILED JULY I2. 1909.

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Patented oci.. 5, 1915.

N. w. HARTMAN. GLASS BLOWING MACHINE.

l VAPPL'LCATION FILED JULY 12. 1909. 1,155,809. Patented 0@t.5,1915.

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"l'i'iillmlm enteran sie frs Nenn-n w. HAMMAM, or Tonnen, oI-Iio,assiettes, BY MEsNn ASSIGNMENTS, :roy GENERAL ELECTRIC COMPANY, aconroaamion or new YORK.

GLASS-BLOWING *MACHENE Application tiled July 12, 1909.

T 0 all 'aP/icm t may concern Y Be it known' that l, Nonna W. Haarsma',a citizen of the United States, residing at Toledo, in the county ofLucas and State otA Ohio, have invented a certain new and useiulImprovement in Glass-Blowing Machines, of. which the following is afull, clear, and eX- act description.

The' present invention relates to machinery Jfor automatically blowingglass articles in molds.V l

More particularly, the 'class of machines to which it is directed isthat adapted for blowing glass bulbs and similar articles requiringequal delicacy of work.

My object has been to produce apparatus which shall be capable ofproducing the finished article, which i' shall hereafter, as a matter ofconvenience, call a bulb, with uniform results independently7 of thosevariations in point of time required bythe feeder for obtaining theproper ball on the `end of the blow iron.

A further object has been'to provide'suchl apparatus that a plurality ofmolds' can be utilized by one or more feeders without the interferenceof one with the other in the matter of time of operation.

A further object has been to provide an automatic blowing machine inwhich the mold and blowing means shall not start into 'operation untilthe blowing iron is in position, but which shall remain in positionready for operation until the blowing iron is properly placed. A stillfurther object has been to provide automatic blowing mechanism in whichthe blow iron and the article shall be automatically ejected from themold when the blowing operation is completed.-

The above objects and other useful adlvantages it will be seen areattained by that embodiment of my invention described in the followingspecification and illustrated in the accompanying drawings, in which;

Figure lis a side elevation of one of my machines showing a single moldand the operating mechanism therefor. Fi 2 is a top plan of themechanism on t elower portion or base of this machine. a top planshowing the mechanism for controlling the admission of air to the blowiron mounted at the upper portion ot' the machine. Fig.. l is a top planof the heel of the machine frame, on which the motor Specification ofLetters Patent.

Patented ct. 5, i915.

serial no. 507,@56.

for driving the apparatus is mounted. Fig; 5 1s an enlarged sideelevation partly broken aivay'showing the fixed bearings vin the tramefor the operating parts and illustrating the position of the cams forcontrolling the movement of the mold. Fig. 6 is a horizontal section onthe line 1i-m of Fig. 5. Fig. 7 is an enlarged detail section of theautomatic clutch controlling the cams shown 1n Fig. G. Fig. 8 is an endview ci. one portion of theclutch showing the tripping dog lying againstthe detent which throws the clutch out of action. 'F ig. 9 is a sideelevation of that portion of the clutch which 'is fixed to one of thecams. Fig. l0 is an enlarged vertical section ci' the blowing head. Fig.Il .is a. further enlarged detail of the valve controlling the admissionof air to the blow iron. Fig'. ,l2 is a front elevation showing therelation of the different molds and their operating connections. Fig.y13 is a detail rear elevation diagrammatic of the .driving connectionsat the rea-r oi the frame, the bearings for the operating parts beingshown in a modified arrangement.

kThe apparatus here illustrated involves the construction of framehaving a verticalstandard A mounted .on a base A which in the presentinstance is itself carried on rollers A so that it may be suitablylocated in the plant. On the base of the frame is carried the mold B.'At the upper end of y the standard is carried the blowing head C formanipulating the blow iron. This last named 'roup of mechanism is,somewhat similar 1n construction to that described in my prior PatentNo. 813,289. issued February 20th, 1906.

The head comprises a. hollow arm C designed to receive air fromthevertical supporting column The liow of air through this arm iscontrolled by a valve C2 which is operated through the mediumof a rockarm C3 and links, by al ring cam C4 (seel Fig. 10) adjustably mounted onthe lower face of the web of a4 gear C5 rotatably mounted on thevertical shaft C which receives its rotative movement from the samemechanism -that operates the mold,as will be subsequently described. Bya train oiv step-up gears C7 the rotary movement of the gear C5 on whichthe said cam C4 is mounted is transmitted to the gripping-jaws C8 bywhich the blow iron D is held. This gripping mechanism ,is similar tothat shown in the patent referred to. By this arrangement, asdistinguished from that of the pat ent, however, it will be seen thatthe con- Atrol of air to any blow iron in a set can oe controlled orvaried without disturbing the control or character ot air flow to theother hlow irons in the sanie group.

rhe hase of the apparatus has tl'iereon a iixed hearing e? suitablylocated as, ior ei;- ainplo, in the hollov.7 column HA through which theair passes to the blowing head, which hearing is for the shaft E throughwhich power is transmitted to' the ope-rating devices. Seine suitahiemeans, Aeither under local control or not, as convenience nia-y dictate,such, for example, a motor E mounted on heel E of the trainoa givesrotative inovenient to said shaft whic" in turn communicates rotativeinovennint5 also constant to the driving shaft TP o the chine, thisshaft operating all oi' the molds and the blowing heads.

-ig'idly mounted on tire hase is casting having' therein a nuinhor oithearings iter the operating parte, which hearings have iivedreintionship to each other hy reason of oev i f f -51 thus preventration.n'uist oni oeemningr dis placed. ln one of these hearings lis ismounted the tu ving shaii't net-ere nienv tio-ned (see second hearing isfor the vertica.1 shaft tj throuh which to the blowing ineens formovement is transin A,ted head, third attore s ally supporting the niofourth hearing fr ai'ort i ally mounting a lever l Y.cirough which thedetent F controlling; the operating mechae nisin is released and throughwhich the blow iron is autf inold. These rigid with reso" permanentcorrelationship -parts.

Loosely mounted on the shaft l so as to he vtreey rotated relativethereto is -a nevel pinion having: exten g therefrom a hearingl sleeveE3 to which are keyed a pair of controlling' cams7 one F2 i'or thepurpose ot opening the :incid7 the other F3 designed for tilting;` themold and carrier to dip the mold into the cooling liquid et' a hath heldir front of nii-chine. to the face of the can so as to he rigidtherewith is a Piate li 'rorining one niemloer ot a. multiple dis.-friction clutch, which l pivoti means tor pivot al hearings all being' tto eeen othere insure the of the oivierating comprises also thealternate disk inernhers @n the tace et this vide a groove FG in whichan erre liv" project-ing from a nionnted loosely on the shaft and ivingin center of the critically thrown troni the.

la l intensos said clutch. This huh has on the face next to the cam F3 ail-shaped projection F9 designed to lie in a similarly shaped notch inthe end tace of the loosely rotatable sleeve E3 on which the cams arekeyed. This hub is of such width and the ii-shaped projection is of suchlength that, although when the projection lies in the notch provided forit, the second meinher F10 of the clutch, which has a sliding keyconnection with the shaft E2, may be forced into operative position7nevertheless when the projection rides part way out of the notch the huhwill act as a spacing` device and force the sliding* ineinher of theclutch away from the mehr her pinned to the canis and thus permit thecams to remain stationary. An adjustable collar F11 threaded in anothercollar which is pinned. to the shaft provides a shoulder against which aspring for the movable ineinher F1 of the friction clutch may hear.

The end of the arm FT projecting from the huh FS extends tosuhstnntiallythe igeripheral face of the clutch plate l@ against the face ot which itlies. llhe edge et' this plate is notched or out away as at F12 so as toallow the detont linger le" to dropin front of the arn'i for the purposeof stopping it in its rotation and causing the tf-shaped projection ilon the huh to ride partly out oit the notch in which it lies. The groovell on the face of the clutch plate is sutliciently wide to pei-init thenecessary play of the arm. it will he seen, therefore7 that it thedetent finger F, which spring pressed, is permitted to operate under theinduence of its springt, the clutch will he thrown out and held out ofoperation at the end of each revolution and the cams can he rotated hythe constantly driven shaft' E2 only by the withdrawal of the detentineinher from the path ot the arm.

The spring pressed detent finger is, as above -pointed out, connected toone end ot the hand. lever l? pivotally mounted in the hearing ivtheupper end of which lever lies in a slot at the end ci a sliding fork F13held in a suitable hearing above the mold. The forward end oit the forklies somewhat in, advance of the mold when the former is in the positionwhich itoccupies while the upwar end et the lever arin thrown 'forn wardand the detent is thrown inward lying .in the path of the clutch arinreferred to. lt will thus he seen that the swinging oit the hlow arininto the inold will. push the forl to the rear and carry the lever Fback so as to pull the detent l1" away from the `clutch arm FT and thusthrow into operainsegne the simple act of nio-ving the blow iron intoposition. For effecting the saine control. over the movement of thespring pressed de tent l may also employ a. foot lever F, as shoivmwhich has a suitable connection with the detent at the point at whichthedetent is attached to the .unlocking lever l?.

W hen the detent is withdrawn. so as to .permit the clutch' to beslipped bachA into operation by the spring pressure behind it, thedetent linger F will then ride upon the periphery of the plate member F4of the clutch and positively hold the lever F d the fork F13 back7 sothat 'the blow iron hangs in the mold. As soon as the clutch rotatesagain to the .proper poifht the detent will drop into the notch 'F provided in the periphery oir?. the plate member, which action will throwthe upper end of unlocking lever outward and thrust the lou' ironforward moving itont oi" the we or the mold which will immediatelypreceding this have been opened by means oi", mecnanism controlled bythevcam F2, as will be subsequently described.

mold itself is shown as of the conventional shape in which the parts arehinged and swung toward 'and from' each other through the medium of across head B2, which is pushed in the opening direc tion a spring B3surrounding a pin projectina; from said crrss head, and it is closed thecam F2 operating through a bell 'cranh B4 and link connection B5, thesaid vbell crank being;- journaled on the mold carrier B', and the linkbeingr pivotally connected to the bell crank and the cross head. This ce.i is timed to close the molds immediately upon the placing of the blowiron in position and the throwing of the clutch into operation. The camthen continues to hol-fl the mold closed duringi'a portion of therevolution of the bevel gear on the hub of which it is mounted. At a.certain point in the revolution, of this cam the bell controlling thecross head B2 is released and the latter is permitted to move bach underspring pressure and open the nold. Immediately after the openine of themold the detent Ff drops in the notch 1? and the sli-:lingforlrl13throws the blow iron and the finished bulb outward. After this point thecam F3 'controlling the mold carrier, on which the mold is mounted,y

permits the latter to drop forward into the This last named cani concooling' trough. trols the movement of the mold carrier through themedium or" a tail piece B projecting beyond the pivot on which the moldcarrier is mounted, which tail piecehas an anti-friction roller ridingon .the peripheral surface of the cam. s

The subsequent movement of the cani controlling the mold carrier liftsit from the cooling trough and holds it in position for the nextoperation. The detent F controllingr the clutch arm then abuts againstsaid arm and throws out the clutch, and consequently the, entireoperating mechanism at the same time. The apparatus is then in positionfor a repetition of the operation.

By the arrangement above described it will be seen that l have providedmeans whereby a series of molds may be operated side by side andcontinuously fed by a feeder who' may time the sta-rt ci' the blowing;operation in each mold in exact accordance with the requirements of thegathered glass on the end of the iron. lt frequently happens that thegathered glass is notI in condition to place in a' mold at orecisely thesame number of seconds after the iron has been dipped into the batch. ltis for this reason that those machines Where a plurality of molds havebeen used (such, ior example, the rotary lmachines that have been usedfor coarser and heavier articles up to the present time) have been lessellicient for suchjdelicate articles as bulbs for incandescent lamps.1illith the construction which l have here shown, however, it will beseen that it is possible for a feeder to manipulate as many of the moldsas he maybe individually able to attend and not be under the compulsionoi' inserting? the" blow iron into the blowing machine either before orafter the exact moment at which the gathered glass is ready, owingto thefact that each of the molds, although operating absolutely automaticallyto give the proper treatment to the glass when it once starts,nevertheless remains inreceptive position until the feeder starts iteither through the automatic means described or by working ine footlever which also controls the detent.

This means ci rendering the several molds in the machine automatic intheir operation of blowing and reproducing the same re sults at eachoperation, but capable of being; held out of operation for such variablelengths of time as the individual article be ing` treated therein mayrequire, eliminates one of the greatest objections heretofore urgedagainst the rotary machines in which the several molds are brought tofeeding position and moved away from the saine at'` exact intervals.Glass gatherers have urged against these rotary machines the fact that1t .is almost impossible to have the gathered glass in condition at the'exact moment at.-

which the mold is ready to receive it.

lt hask further been found that in thev use of automatic machines it issometimes desirable to have part of the molds of slightly diiierent sizeor shape from the,

. others. This inability to time the gathered glass exactly with themoment of presentation of the mold in a rotary .machine is so serious asto almost prohibit the use of

